Caloplaca arcis Lecanorales
Caloplaca arcis

Growth type crustose
Chemical results: K+ crimson

Can be common on cement and limestone, often found in churchyards. Previously known as 'Caloplaca A' by churchyard recording groups.
BLS conservation evaluation: LC NS

Thallus appearing as minute yellow rosettes, lobate at margins. Margins of areoles with large blastidia, soredia absent.

Similar: Caloplaca citrina and Caloplaca flavocitrina are sorediate but without marginal lobes


Caloplaca arcis

Caloplaca arcis

Caloplaca arcis
Caloplaca arcis
Pamphill Green and Wareham, Dorset. December 2015, 2016

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